WO2020001612A1

WO2020001612A1 - Display panel and manufacturing method therefor, and display apparatus

Info

Publication number: WO2020001612A1
Application number: PCT/CN2019/093661
Authority: WO
Inventors: 王鑫; 杜建华
Original assignee: 京东方科技集团股份有限公司
Priority date: 2018-06-29
Filing date: 2019-06-28
Publication date: 2020-01-02
Also published as: US20210124109A1; US11294220B2; CN108803126A; CN108803126B

Abstract

A display panel and a manufacturing method therefor, and a display apparatus. The display panel comprises: a diffusion particle layer (20), and a colour filter layer (30) and a liquid crystal layer (40) stacked on the diffusion particle layer (20). The diffusion particle layer (20) comprises a transparent dielectric layer (21) and a photosensitive polymerisation monomer (22) doped in the transparent dielectric layer (21), a side surface of the transparent dielectric layer (21) being a light incident surface. The photosensitive polymerisation monomer (22) is used for undergoing a polymerisation reaction under the effect of light rays incident on the transparent dielectric layer (21) at the light incident surface, and after undergoing the polymerisation reaction, the photosensitive polymerisation monomer (22) is used for scattering light rays. A diffusion sheet need not be additionally arranged, thereby solving the problem of complex display panel structures, and achieving the effect of simplifying the display panel structure.

Description

Display panel, manufacturing method thereof, and display device

This application claims priority from a Chinese patent application filed on June 29, 2018 with an application number of 201810696705.X and an invention name of "Display Panel, Manufacturing Method thereof, and Display Device", the entire contents of which are incorporated herein by reference. in.

Technical field

The present application relates to the field of display technology, and in particular, to a display panel, a manufacturing method thereof, and a display device.

Background technique

The display panel is a device with a display function.

A display panel includes a liquid crystal panel (English: Liquid Crystal Display; LCD for short) and a backlight; the backlight includes a light guide plate, a diffusion sheet located on a light emitting surface of the light guide plate, and a light source on one side of the light guide plate. The light guide plate has screen dots on the side far from the diffusion sheet, and the light emitted by the light source is reflected by the screen dots of the light guide sheet to the diffusion sheet, and then diffused and emitted through the diffusion sheet.

Summary of the invention

The present application provides a display panel, a manufacturing method thereof, and a display device. The technical solution is as follows:

In one aspect, a display panel is provided, including a diffusion particle layer and a color filter layer and a liquid crystal layer laminated on the diffusion particle layer;

The diffusion particle layer includes a transparent medium layer and a photosensitive polymerized monomer doped in the transparent medium layer, and a side surface of the transparent medium layer except for two larger surfaces is a light incident surface;

Wherein, the photosensitive polymerization monomer is used to cause a polymerization reaction under the action of light incident from the light incident surface into the transparent medium layer, and the photosensitive polymerization monomer after the polymerization reaction is used to scatter the light.

Optionally, the materials of the photopolymerizable monomer include: salicylate materials, benzophenone materials, benzotriazole materials, substituted acrylonitrile materials, triazine materials, and hindered amine materials. Either.

Optionally, the density of the photosensitive polymerizable monomer at any position in the diffusion particle layer is positively related to the distance between the arbitrary position and the light incident surface.

Optionally, the display panel has a plurality of sub-pixel regions arranged in an array, and the color filter layer includes a plurality of color filter blocks located one-to-one in the plurality of sub-pixel regions, each of the color filter blocks. Each has a groove, and the liquid crystal layer includes a liquid crystal located in the groove.

Optionally, any two adjacent color filter blocks abut each other.

Optionally, the color filter layer is located between the diffusion particle layer and the liquid crystal layer;

Alternatively, the color filter layer is located on a side of the liquid crystal layer away from the diffusion particle layer.

Optionally, the material of the color filter layer includes resin.

Optionally, the display panel includes two polarizers, and the liquid crystal layer and the diffusion particle layer are located between the two polarizers.

Optionally, the display panel is a always-on display panel.

Optionally, the material of the transparent medium layer includes a polymethyl methacrylate material or a polyimide material.

Optionally, the display panel includes an array substrate for controlling the liquid crystal layer.

Optionally, the materials of the photopolymerizable monomer include: salicylate materials, benzophenone materials, benzotriazole materials, substituted acrylonitrile materials, triazine materials, and hindered amine materials. Any one

The density of the photopolymerizable monomer at an arbitrary position in the diffusion particle layer is positively related to the distance between the arbitrary position and the light incident surface;

The display panel has a plurality of sub-pixel regions arranged in an array, and the color filter layer includes a plurality of color filter blocks located one-to-one in the plurality of sub-pixel regions, each of which has a concave shape. A groove, the liquid crystal layer including a liquid crystal in the groove;

Any two adjacent color filter blocks abut each other;

The color filter layer is located between the diffusion particle layer and the liquid crystal layer;

Alternatively, the color filter layer is located on a side of the liquid crystal layer away from the diffusion particle layer;

The material of the color filter layer includes resin;

The display panel includes two polarizers, and the liquid crystal layer and the diffusion particle layer are located between the two polarizers;

The display panel is a always-on display panel;

The material of the transparent medium layer includes: polymethyl methacrylate material or polyimide material;

The display panel includes an array substrate for controlling the liquid crystal layer.

In another aspect, the display device includes a display panel and a light source. The display panel is the display panel according to the first aspect, and the light source is located on a side of the transparent medium layer in the display panel.

Optionally, the light source includes a plurality of light emitting diodes, and each of the light emitting diodes includes a red light emitting unit, a green light emitting unit, and a blue light emitting unit.

In another aspect, a method for manufacturing a display panel is provided. The method includes:

Providing a diffusion particle layer, the diffusion particle layer comprising a transparent medium layer and a photosensitive polymerized monomer doped in the transparent medium layer, and a side surface of the transparent medium layer is a light incident surface;

A color filter layer and a liquid crystal layer are laminated on the diffusion particle layer;

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions in the embodiments of the present application more clearly, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are just some embodiments of the application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative labor.

FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present application.

FIG. 2 is an effect diagram of polymerization reaction of a photosensitive polymerization monomer provided by an embodiment of the present application; FIG.

FIG. 3 is an optical path diagram of light transmitted in a diffused particle layer according to an embodiment of the present application.

FIG. 4 is a schematic structural diagram of another display panel according to an embodiment of the present application.

FIG. 5 is a schematic structural diagram of a color filter substrate.

FIG. 6 is a schematic structural diagram of another display panel according to an embodiment of the present application.

FIG. 7 is a schematic structural diagram of still another display panel according to an embodiment of the present application.

FIG. 8 is a schematic diagram of controlling display on a display panel according to an embodiment of the present application.

FIG. 9 is a graph of a voltage applied to a pixel electrode and a grayscale value of a pixel corresponding to the pixel electrode according to an embodiment of the present application.

FIG. 10 is a schematic structural diagram of a display device according to an embodiment of the present application.

FIG. 11 is a top view of a display device provided by an embodiment of the present application.

FIG. 12 is a top view of another display device according to an embodiment of the present application.

FIG. 13 is a flowchart of a method for manufacturing a display panel according to an embodiment of the present application.

FIG. 14 is a flowchart of another method for manufacturing a display panel according to an embodiment of the present application.

detailed description

The embodiments of the present application will be described below with reference to the drawings.

Please refer to FIG. 1, which is a schematic structural diagram of a display panel according to an embodiment of the present application. The display panel may include a diffusion particle layer 20 and a color filter layer 30 and a liquid crystal layer 40 laminated on the diffusion particle layer 20.

The diffusion particle layer 20 includes a transparent medium layer 21 and a photopolymerizable monomer 22 doped in the transparent medium layer 21. The side of the transparent medium layer 21 (this side refers to the two sides of the diffusion particle layer 20 excluding the larger two sides (more The two large surfaces, that is, the upper and lower surfaces of the transparent medium layer 21 in FIG. 1) are light incident surfaces.

Among them, the photosensitive polymerization monomer 22 is used to cause a polymerization reaction under the action of light incident on the light-incident surface into the transparent medium layer 21, and the photosensitive polymerization monomer 22 after the polymerization reaction is used to scatter light.

In the embodiment of the present application, the transparent medium layer 21 can play a light guiding role for the light incident from at least one side of the diffusion particle layer 20. In the absence of the photosensitive polymerization monomer 22, the light can be in the transparent medium. The upper surface and the lower surface of the layer 21 are totally reflected, so that the transparent medium layer 21 cannot be emitted.

The photosensitive polymerization monomer 22 may be distributed in the transparent medium layer 21 without light, and the photosensitive polymerization monomer 22 may undergo a polymerization reaction under the condition of light. For example, please refer to FIG. 2. FIG. 2 is an effect diagram of a polymerization reaction of a photosensitive polymerization monomer provided in an embodiment of the present application. The photosensitive polymerization monomer 22 in the transparent medium layer 21 can move under the condition of light, and the phase The adjacent photopolymerizable monomers 22 can be polymerized together, and this process is called a polymerization reaction of the photopolymerizable monomers 22. After the polymerization reaction, the photosensitive polymerization monomers 22 can form an interwoven network structure in the transparent medium layer 21. When light is irradiated onto the network structure, the network structure can scatter the light, thereby destroying the transparent medium layer 21 The total reflection of the light enables the light to exit the transparent medium layer 21.

For example, please refer to FIG. 3. FIG. 3 is a light path diagram of light transmitted in the diffusion particle layer according to the embodiment of the present application. When the light is incident from at least one side of the diffusion particle layer, the light may be on the transparent medium layer 21. Total reflection is performed on the surface and the lower surface. When light passes through the photopolymerizable monomer 22, the photopolymerization monomer 22 undergoes a polymerization reaction. After the polymerization reaction, the photopolymerizable monomer 22 can scatter the light, and the scattered light can exit the transparent medium layer 21.

In the embodiment of the present application, the function implemented by the transparent medium layer 21 in the diffusion particle layer 20 is equivalent to a light guide plate, and the function implemented by the miscellaneous photosensitive polymerization monomer 22 in the transparent medium layer 21 may be equivalent to a halftone dot in the light guide plate. Since both the transparent medium layer 21 and the photosensitive polymerizable monomer 22 can transmit light, the display panel as a whole can achieve high light transmittance.

In summary, the display panel provided in the embodiment of the present application includes a diffusion particle layer, and a color filter layer and a liquid crystal layer laminated on the diffusion particle layer. The diffusion particle layer includes a transparent medium layer and a photosensitive polymerized monomer doped in the transparent medium layer, and the side surface of the transparent medium layer is a light incident surface. Among them, the photosensitive polymerization monomer is used to cause a polymerization reaction under the action of the light incident on the light-transmitting surface into the transparent medium layer, and the photosensitive polymerization monomer after the polymerization reaction is used to scatter the light. In this way, it is not necessary to provide a separate diffusion sheet, and the problem of a more complicated structure of the display panel is solved. The effect of simplifying the structure of the display panel is achieved.

In the embodiment of the present application, the material of the transparent dielectric layer 21 includes a polymethyl methacrylate material or a polyimide material. Optionally, the material of the photopolymerizable monomer 22 includes any of salicylate-based materials, benzophenone-based materials, benzotriazole-based materials, substituted acrylonitrile-based materials, triazine-based materials, and hindered amine-based materials. One.

Optionally, the material of the color filter layer 30 in the display panel may include resin. Please refer to FIG. 4. FIG. 4 is a schematic structural diagram of another display panel provided by an embodiment of the present application. In the embodiment of the present application, the display panel has a plurality of sub-pixel regions arranged in an array, and the color filter layer 30 includes a one-to-one correspondence. A plurality of color filter blocks 31 located in a plurality of sub-pixel regions, that is, one color filter block 31 is correspondingly disposed in each sub-pixel region. Each of the three sub-pixel regions may constitute one pixel region. For example, each pixel region includes a red subpixel region, a green subpixel region, and a red subpixel region. A red color filter block 31a may be provided in the red subpixel region, and a green color filter block 31b may be provided in the green subpixel region. A blue color filter block 31c is provided in the blue sub-pixel region. The material of the red color filter block 31a may include a red resin, the material of the green color filter block 31b may include a green resin, and the material of the blue color filter block 31c may include a blue resin. Optionally, a transparent substrate 10 is provided outside the diffusion particle layer 20 and the liquid crystal layer 40, and these two transparent substrates 10 can protect the internal structure of the display panel.

A liquid crystal display panel includes an array substrate, a color filter substrate, and a liquid crystal layer located between the array substrate and the color filter substrate. Please refer to FIG. 5. FIG. 5 is a schematic structural diagram of a color filter substrate. The color filter substrate is provided with a color filter 01. The color filter 01 may include a red filter 01a and a green filter 01b. And the red filter 01c, in order to prevent the display panel from appearing a cross-color phenomenon, a black matrix 02 needs to be set between two adjacent filters. Because the color filter has a high light absorption rate and the area of the black matrix 02 is large (usually the area of the black matrix 02 in the display area of the display panel is about 40%), so the current liquid crystal display panel The light output efficiency (light output efficiency can be approximated as the ratio of the brightness of the light emitted from the front of the display panel to the brightness of the light emitted from the light source of the display panel) is low, resulting in a poor display effect of the liquid crystal display panel and a liquid crystal display panel The power consumption is large.

In the embodiment of the present application, since the light absorption rate of the resin is smaller than that of the color filter, the light output efficiency of the display panel can be improved.

In addition, the display panel may not be provided with a black matrix to further improve the light output efficiency of the display panel.

When a black matrix is not provided, in order to prevent the problem of cross-color in the display panel, an embodiment of the present application provides an implementable manner. As shown in FIG. 6, FIG. 6 is another structure of a display panel provided by the embodiment of the present application. A schematic view, in this display panel, a color filter layer 30 is disposed between the diffusion particle layer 20 and the liquid crystal layer 40. That is, the diffusing particle layer 20, the color filter layer 30, and the liquid crystal layer 40 are sequentially stacked in this order. In the color filter layer 30, a groove 32 is provided in each color filter block 31, and the liquid crystal layer 40 includes liquid crystal provided in the groove 32.

In the embodiment of the present application, the liquid crystal in each sub-pixel region can be covered with resin. In this structure, the problem of cross-coloring of colored light in adjacent sub-pixel regions will not occur. Exemplarily, the light passes through the red color filter block 31a, and after exiting from the side of the red color filter block 31a, the emitted red light will be filtered by the adjacent color filter block (ie, the green color filter block 31b or the blue color filter). The side absorption of block 31c) effectively avoids the phenomenon that the light in the display panel appears cross-colored in the liquid crystal layer.

Optionally, since no black matrix is provided in the display panel, any two adjacent color filter blocks 31 may abut each other. At this time, after the light is emitted from the side of the color filter block, all the light is absorbed by the side of the adjacent color filter block, which further prevents the phenomenon of cross-coloring of the light in the display panel in the liquid crystal layer.

As shown in FIG. 7, FIG. 7 is a schematic structural diagram of another display panel provided by an embodiment of the present application. In this display panel, the diffusion particle layer 20, the color filter layer 30, and the liquid crystal layer 40 are sequentially superposed, or the diffusion particle layer 20, the liquid crystal layer 40, and the color filter layer 30 are sequentially superposed. It should be noted that FIG. 7 is schematically illustrated by taking an example in which the diffusion particle layer 20, the color filter layer 30, and the liquid crystal layer 40 are sequentially stacked. The display panel may further include two polarizers (a first polarizer 50a and a second polarizer 50b), and the color filter layer 30 and the liquid crystal layer 40 are located between the first polarizer 50a and the second polarizer 50b.

Optionally, the display panel is a always-on display panel. The always-on display panel is a display panel that is in a light-transmitting state when no power is applied. This can further improve the overall light transmission of the display panel. In the always-on display panel, the polarization direction of the first polarizer 50a is perpendicular to the polarization direction of the second polarizer 50b, and the liquid crystal in the liquid crystal layer can invert the phase of the light by 90 degrees when no power is applied. The emitted light can then pass through the two polarizers and the liquid crystal layer.

Optionally, the density of the photopolymerizable monomer 21 at any position in the diffusion particle layer 20 is positively related to the distance between the arbitrary position and the light incident surface. That is, the farther away from the light incident surface, the greater the density of the photosensitive polymerizable monomer. When the light incident surface includes two opposite sides of the transparent medium layer, the photosensitive polymerizable monomer passes from one light incident surface to the other light incident surface. The area density can be changed to be larger first and then smaller. This structure ensures that light can be transmitted uniformly in the diffusion particle layer, and improves the uniformity of light emitted from the display panel.

As shown in FIG. 6 or FIG. 7, the display panel may further include a plurality of thin film transistors (English: Thin Film Transistor; TFT for short) 60 arranged in an array disposed on any one of the two substrates 10.

In the embodiment of the present application, a TFT is provided in each sub-pixel region, and a pixel electrode and a common electrode are further provided in each sub-pixel region. As shown in FIG. 8, FIG. 8 is a schematic diagram of controlling display of a display panel according to an embodiment of the present application. The liquid crystal layer 40 in the display panel may be located between the pixel electrode 71 and the common electrode 72. In each sub-pixel region, a TFT is connected to the pixel electrode 71, and the TFT has an on state or an off state. When the TFT is in the on state, electrical signals of different voltages can be applied to the pixel electrode 71 so that the pixel electrode 71 and the common electrode 72 can form a pressure difference that deflects the liquid crystal to different degrees, thereby making the liquid crystal in each sub-pixel region The transmittances are different, so that the display panel can display a color image.

For example, an electric signal having a voltage value of 0 is usually applied to the common electrode 72. It is assumed that when an electric signal having a voltage value of V1 is applied to the pixel electrode 71, a voltage difference of V1 is formed between the pixel electrode 71 and the common electrode 72. The transmittance of liquid crystal between the pixel electrode 71 and the common electrode 72 is the largest. At this time, the grayscale value of the pixel corresponding to the pixel electrode 71 is 255. Similarly, it can be obtained that, when an electric signal having a voltage value of V2 is applied to the pixel electrode 71, the grayscale value of the pixel corresponding to the pixel electrode 71 is 200; when an electric signal having a voltage value of V3 is applied to the pixel electrode 71 The grayscale value of the pixel of the pixel corresponding to the pixel electrode 71 is 0. The corresponding relationship between the voltage applied to the pixel electrode 71 and the grayscale value of the pixel corresponding to the pixel electrode 71 is shown in FIG. 9. It can be seen that the voltage is negatively correlated with the grayscale. The larger the voltage, the smaller the grayscale.

In addition, since the transparent light-guiding medium and the photosensitive polymerizable monomer in the display panel are transparent, the transparent light-guiding medium is not provided with dots, and the display panel may not be provided with a black matrix. The overall light transmittance is high, which not only reduces the power consumption of the display panel, but also enables the display panel to have a certain transparency function.

An embodiment of the present application further provides a display device. As shown in FIG. 10, FIG. 10 is a schematic structural diagram of a display device provided by an embodiment of the present application. The display device includes a display panel 100 and a light source 200. The display panel 100 may be the display panel shown in FIG. 1, FIG. 4, FIG. 6, or FIG. 7. The light source 200 is located on at least one side of the diffusion particle layer 20. The light emitted from the light source 200 can enter the diffusion particle layer 20 from the at least one side. The at least one side is a light incident surface.

In the embodiment of the present invention, the density of the photosensitive polymerizable monomer at any position in the diffusion particle layer is positively related to the distance between the light source (or light incident surface) near the arbitrary position and the arbitrary position. The uniform transmission of light in the diffusion particle layer is ensured, and the brightness uniformity of the display device is improved.

For example, when the light source is located on one side of the diffusion particle layer, as shown in FIG. 11, FIG. 11 is a top view of a display device provided by an embodiment of the present application. The photosensitive polymerized monomer at any position in the diffusion particle layer 20 The density of γ increases as the distance from the light source 200 (or the light incident surface m) at this arbitrary position increases.

When the light sources are located on both sides of the diffusion particle layer, as shown in FIG. 12, FIG. 12 is a top view of another display device according to an embodiment of the present application. The light source 200 is located near two opposite sides of the diffusion particle layer 20, and the density of the photosensitive polymerized monomer at the position near the light source 200 in the diffusion particle layer 20 is lower than that of the light diffusion layer 20 in the central region. The density of the photopolymerizable monomer.

As shown in FIGS. 11 and 12, the light source 200 includes a plurality of light emitting diodes (English: Light Emitting Diode; LED for short) 210, and each LED 210 includes a red light emitting unit 211, a green light emitting unit 212, and a blue light emitting unit 213. . The LEDs 210 in the display device can drive any one of the light-emitting units in the LED 210 to emit light separately, or can simultaneously drive all the light-emitting units in the LED 210 to emit light. When the LED 210 drives all the light emitting units in the LED 210 to emit light, the LED 210 can emit white light.

If the display device only needs to display an image of one color, the LED 210 can drive the light emitting unit of the corresponding color to emit light. For example, when the display device needs to display a red image, the LED 210 only needs to drive the red light emitting unit 211 of the LED 210. It is sufficient to emit light, which further reduces the power consumption of the display device.

An embodiment of the present application further provides a method for manufacturing a display panel. The method is used for manufacturing the display panel shown in FIG. 1, and the method may include:

A diffusion particle layer is provided. The diffusion particle layer includes a transparent medium layer and a photosensitive polymerized monomer doped in the transparent medium layer. The side of the transparent medium layer is a light incident surface.

A color filter layer and a liquid crystal layer are laminated on the diffusion particle layer

Among them, the photosensitive polymerization monomer is used to cause a polymerization reaction under the action of the light incident on the light-transmitting surface into the transparent medium layer, and the photosensitive polymerization monomer after the polymerization reaction is used to scatter the light.

Please refer to FIG. 13, which is a flowchart of a method for manufacturing a display panel according to an embodiment of the present application. The method is used for manufacturing the display panel shown in FIG. 6. The method may include:

Step 1301, a plurality of TFTs are formed on a first transparent substrate.

In the embodiment of the present invention, the first transparent substrate has a plurality of sub-pixel regions, and at least one TFT may be formed in each of the sub-pixel regions.

Step 1302: A diffusion particle layer is formed on a first transparent substrate on which a plurality of TFTs are formed.

In the embodiment of the present application, a transparent dielectric layer may be formed on a first transparent substrate on which a plurality of TFTs are formed, and a photopolymerizable monomer may be mixed in the transparent medium layer using a miscellaneous process, thereby forming a diffusion particle layer.

Optionally, multiple TFTs may also be located on the first transparent substrate on which the diffusion particle layer is formed, which is not limited in the embodiment of the present application.

Step 1303: A color filter layer is formed on the first transparent substrate on which the diffusion particle layer is formed.

In the embodiment of the present application, a material of the color filter layer may include a resin. First, a red resin layer can be coated on the diffusion particle layer, and a red patterning block with a groove is formed in each red sub-pixel region of the display panel by a one-shot patterning process; then, on the red coloring block Apply a green resin layer, and use a one-shot patterning process to form a green filter block with a groove in each green sub-pixel area of the display panel; finally, apply a blue resin layer on the green filter block A blue color filter block with a groove is formed in each blue sub-pixel of the display panel by a one-shot patterning process. The one-time patterning process includes: photoresist coating, exposure, development, etching, and photoresist stripping.

Step 1304: Form a liquid crystal layer on the first transparent substrate on which the color filter layer is formed.

Exemplarily, a liquid crystal may be filled in a groove of each color filter block to form a liquid crystal layer on the color filter layer.

Step 1305: Use a second transparent substrate for packaging.

In the embodiment of the present application, the second transparent substrate may be used to encapsulate the liquid crystal to prevent the liquid crystal from flowing out of the display panel.

Please refer to FIG. 14, which is a flowchart of another method for manufacturing a display panel according to an embodiment of the present application. The method is used to manufacture the display panel shown in FIG. 7. The method may include:

Step 1401, forming a plurality of TFTs on a first transparent substrate.

For this step 1401, reference may be made to the corresponding process in the foregoing step 1301, which is not repeated in this embodiment of the present application.

Step 1402: A diffusion particle layer is formed on a first transparent substrate on which a plurality of TFTs are formed.

For this step 1402, reference may be made to the corresponding process in the foregoing step 1302, which is not repeatedly described in this embodiment of the present application.

Step 1403: Form a first polarizer on the first transparent substrate on which the diffusion particle layer is formed.

For example, a first polarizer may be formed on the diffusion particle layer.

Step 1404: Form a color filter layer on the first transparent substrate on which the first polarizing plate is formed.

In the embodiment of the present application, a material of the color filter layer may include a resin. First, a red resin layer may be coated on the diffusion particle layer, and a red patterning block is formed in each red sub-pixel region of the display panel by a one-shot patterning process; then, a layer of green is coated on the red coloring block. The resin layer uses a one-shot patterning process to form a green color filter block in each green sub-pixel area of the display panel; finally, a blue resin layer is coated on the green color filter block, and a one-shot patterning process is used on each display panel. A blue color filter is formed in each of the blue sub-pixels. The one-time patterning process includes: photoresist coating, exposure, development, etching, and photoresist stripping.

Step 1405: forming a liquid crystal layer on the first transparent substrate on which the color filter layer is formed.

For example, the color filter layer may be filled with liquid crystal.

Step 1406: Form a second polarizer on the first transparent substrate on which the liquid crystal layer is formed.

Exemplarily, a second polarizing plate may be formed on the liquid crystal layer. Optionally, the polarization direction of the second polarizer is perpendicular to the polarization direction of the first polarizer.

Step 1407: Use a second transparent substrate for packaging.

For this step 1407, reference may be made to the corresponding process in the foregoing step 1305, which is not repeatedly described in this embodiment of the present application.

Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the working principle of the display panel described above can refer to the foregoing embodiment of the structure of the display panel, and will not be repeated here.

In summary, the display panel manufacturing method provided in the embodiment of the present application includes a manufactured display panel including a diffusion particle layer and a color filter layer and a liquid crystal layer laminated on the diffusion particle layer. The diffusion particle layer includes a transparent medium layer and a photosensitive polymerized monomer doped in the transparent medium layer, and the side surface of the transparent medium layer is a light incident surface. Among them, the photosensitive polymerization monomer is used to cause a polymerization reaction under the action of light incident on the light-transmitting surface into the transparent medium layer, and the photosensitive polymerization monomer after the polymerization reaction is used to scatter light. In this way, it is not necessary to separately provide a diffusion sheet, and the problem of a more complicated structure of the display panel is solved. The effect of simplifying the structure of the display panel is achieved.

A person of ordinary skill in the art may understand that all or part of the steps for implementing the foregoing embodiments may be implemented by hardware, or may be instructed by a program to complete related hardware. The program may be stored in a computer-readable storage medium. The storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk.

The above description is only an optional embodiment of this application, and is not intended to limit this application. Any modification, equivalent replacement, or improvement made within the spirit and principle of this application shall be included in the protection of this application. Within range.

Claims

A display panel includes a diffusion particle layer (20) and a color filter layer (30) and a liquid crystal layer (40) laminated on the diffusion particle layer (20);

The diffusion particle layer (20) includes a transparent medium layer (21) and a photosensitive polymerized monomer (22) doped in the transparent medium layer (21). The transparent medium layer (21) is divided into two larger ones. At least one side out of the plane is a light incident surface;

Wherein, the photosensitive polymerizable monomer (22) is used for a polymerization reaction under the action of the light incident from the light incident surface into the transparent medium layer (21), and the photosensitive polymerizable monomer (22) after the polymerization reaction occurs. For scattering the light.
The display panel according to claim 1, wherein the material of the photopolymerizable monomer (22) comprises: a salicylate-based material, a benzophenone-based material, a benzotriazole-based material, a substituted acrylonitrile-based material, and a triazine Either a base material or a hindered amine material.
The display panel according to claim 1, wherein the density of the photosensitive polymerized monomer (22) at any position in the diffusion particle layer (20) is positively related to the distance between the arbitrary position and the light incident surface.
The display panel according to claim 1, wherein the display panel has a plurality of sub-pixel regions arranged in an array, and the color filter layer (30) includes a plurality of one-to-one corresponding color filters located in the plurality of sub-pixel regions. A block (31), each of the color filter blocks (31) has a groove (32), and the liquid crystal layer (40) includes a liquid crystal located in the groove (32).
The display panel according to claim 4, wherein any two adjacent color filter blocks (31) abut each other.
The display panel according to claim 1, wherein the color filter layer (30) is located between the diffusion particle layer (20) and the liquid crystal layer (40);

Alternatively, the color filter layer (30) is located on a side of the liquid crystal layer (40) away from the diffusion particle layer (20).
The display panel according to claim 1, wherein a material of the color filter layer (30) includes resin.
The display panel according to claim 1, comprising two polarizers, the liquid crystal layer (40) and the diffusion particle layer (20) being located between the two polarizers (50a and 50b) .
The display panel according to claim 8, wherein the display panel is a normally-lit display panel.
The display panel according to any one of claims 1 to 9, wherein a material of the transparent dielectric layer (21) comprises a polymethyl methacrylate material or a polyimide material.
The display panel according to claim 10, wherein the material of the photosensitive polymerizable monomer (22) comprises: salicylate-based materials, benzophenone-based materials, benzotriazole-based materials, substituted acrylonitrile-based materials, and triazine Any one of the quasi-materials and hindered amine materials;

The density of the photosensitive polymerized monomer (22) at any position in the diffusion particle layer (20) is positively related to the distance between the arbitrary position and the light incident surface;

The display panel has a plurality of sub-pixel regions arranged in an array, and the color filter layer (30) includes one-to-one corresponding color filter blocks (31) located in the plurality of sub-pixel regions. Each of the color blocks (31) has a groove (32), and the liquid crystal layer (40) includes a liquid crystal located in the groove (32);

Any two adjacent color filter blocks (31) abut each other;

The color filter layer (30) is located between the diffusion particle layer (20) and the liquid crystal layer (40);

Alternatively, the color filter layer (30) is located on a side of the liquid crystal layer (40) away from the diffusion particle layer (20);

The material of the color filter layer (30) includes resin;

The display panel includes two polarizers, and the liquid crystal layer (40) and the diffusion particle layer (20) are located between the two polarizers (50a and 50b);

The display panel is a always-on display panel;

The material of the transparent medium layer (21) includes a polymethyl methacrylate material or a polyimide material.
A display device includes a display panel (100) and a light source (200). The display panel (100) is the display panel according to any one of claims 1 to 11, and the light source (200) is located in the display panel. At least one side of the transparent dielectric layer (21) in the display panel.
The display device according to claim 12, wherein the light source (200) includes a plurality of light-emitting diodes, and each of the light-emitting diodes includes a red light-emitting unit, a green light-emitting unit, and a blue light-emitting unit.
A method for manufacturing a display panel, for manufacturing the display panel according to any one of claims 1 to 11, the method comprising:

A diffusion particle layer (20) is provided. The diffusion particle layer (20) includes a transparent medium layer (21) and a photosensitive polymerized monomer (22) doped in the transparent medium layer (21). The transparent medium layer (21) The sides other than the two larger sides are light-incident surfaces;

A color filter layer (30) and a liquid crystal layer (40) are laminated and arranged on the diffusion particle layer (20);

Wherein, the photosensitive polymerizable monomer (22) is used for a polymerization reaction under the action of the light incident from the light incident surface into the transparent medium layer (21), and the photosensitive polymerizable monomer (22) after the polymerization reaction occurs. For scattering the light.